MBtile or Kap missing or hidden?: Zoom into the area of the tiles, they will appear. MBtiles and Kaps only show at certain scales, similar to charts. (You can also make mbtiles at different scales similar to charts).
Navigational KAPS are navigational files in a MapMedia format that is usable by most navigation programs, like OpenCPN or MaxSea or Capt'n Navigator. These files have been made from Google Earth, typically at 7,200 feet (2200m) elevation, to get all the detail possible. Jon Hacking.
Red Sea, Papa New Guinea, Soloman Islands, Philipines and Eastern Indonesia, Micronesia (west of Marshalls, including Palau), Marshall Islands, Between Fiji and the Marshall Islands, Fiji, Tonga, Cook Islands, Society, San Blas
Also good Links to other GE Charts Sets at the bottom
Zen Again's Charts Pacific Ocean, SE Asia, Crossing to S Africa, S Atlantic, Brazil